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add From impls for BitSet and GrowableBitSet

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This commit is contained in:
DrMeepster 2022-05-13 21:52:22 -07:00
parent 2d1e075079
commit 3e9d3d917a
1 changed files with 12 additions and 0 deletions
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12
compiler/rustc_index/src/bit_set.rs
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@ -340,6 +340,12 @@ impl<T: Idx> BitRelations<BitSet<T>> for BitSet<T> {
} }
} }
impl<T: Idx> From<GrowableBitSet<T>> for BitSet<T> {
fn from(bit_set: GrowableBitSet<T>) -> Self {
bit_set.bit_set
}
}
/// A fixed-size bitset type with a partially dense, partially sparse /// A fixed-size bitset type with a partially dense, partially sparse
/// representation. The bitset is broken into chunks, and chunks that are all /// representation. The bitset is broken into chunks, and chunks that are all
/// zeros or all ones are represented and handled very efficiently. /// zeros or all ones are represented and handled very efficiently.
@ -1469,6 +1475,12 @@ impl<T: Idx> GrowableBitSet<T> {
} }
} }
impl<T: Idx> From<BitSet<T>> for GrowableBitSet<T> {
fn from(bit_set: BitSet<T>) -> Self {
Self { bit_set }
}
}
/// A fixed-size 2D bit matrix type with a dense representation. /// A fixed-size 2D bit matrix type with a dense representation.
/// ///
/// `R` and `C` are index types used to identify rows and columns respectively; /// `R` and `C` are index types used to identify rows and columns respectively;